<asp:ButtonField Text="成立"  CommandName="assReg"/>
 
  protected void grdSignedAss_RowCommand(object sender, GridViewCommandEventArgs e)

    {

        if (e.CommandName == "assReg")

        {

            int intRow = int.Parse(e.CommandArgument.ToString()); //获取当前所在行
              string strUniqueID = grdSignedAss.DataKeys[intRow].Value.ToString();

        }

    }